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Abstract

A traffic output suppression apparatus and a method for preventing congestion in an asynchronous transfer mode network. The apparatus includes an input cell classification processor for detecting virtual connection identifiers and cell loss priority information from an input cell stream and classifying the input cell stream into real-time process type cells and process-after-standby type cells, a real-time process type cell processor for selectively discarding or passing the real-time process type cells from the input cell classification processor in response to the cell loss priority information from the input cell classification processor and external network node state information, a network node state processor for generating a storage command and an extraction command in response to the external network node state information, a process-after-standby type cell processor for processing the process-after-standby type cells from the input cell classification processor in response to the storage command and the extraction command from the network node state processor, and a cell output processor for transferring the output cells from the real-time process type cell processor or the output cells from the process-after-standby type cell processor in a first-in-first-out manner.

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First Claim